ISHS Acta Horticulturae 563: International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops
IDENTIFICATION OF ACCESSIONS SHOWING LOW NITRATE ACCUMULATION IN A GERMPLASM COLLECTION OF GARDEN BEET |
| Authors: | D. Grzebelus, R. Baranski |
| Keywords: | Beta vulgaris, gene bank, genotype/environment interaction, nutritional quality, vegetable |
| Abstract:
A germplasm collection of 40 garden beet (Beta vulgaris L. ssp. vulgaris convar. crassa provar. conditiva Helm.) accessions was screened to assess the level of nitrates in fresh root tissue. Field trials were carried out in 1997 and 1998. The accessions differed highly in their tendency for nitrate accumulation. Cultivars Panzari and Norton showed the highest level of nitrate, over 1400 mg NO3-/kg fresh weight. Several cultivars with low levels of nitrates in root tissue, i.e. less than 600 mg NO3-/kg fresh weight, were identified. Among them cultivar, Rouge Crapaudine showed the lowest nitrate content. A high difference in the mean nitrate content for the two years of research was observed, i.e. 609 and 985 mg NO3-/kg fresh weight for 1997 and 1998, respectively. However, the yearraccession interaction appeared to be non-significant. The present study showed that genetic and environmental factors played major roles in nitrate accumulation in the roots of garden beet. A possible use of the germplasm collection for breeding of new cultivars with improved nutritional quality is discussed. | |
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